<template>
    <div class="goodsinfo-container">
        <transition
      @before-enter="beforeEnter"
      @enter="enter"
      @after-enter="afterEnter">
      <div class="ball" v-show="ballFlag" ref="ball"></div>
    </transition>
        <!-- 商品轮播图 -->
        <div class="mui-card">
			<div class="mui-card-content">
				<div class="mui-card-content-inner">
					<swiper :lunbotuList="lunbotu" :isfull="false"></swiper>
				</div>
			</div>
		</div>
        <!-- 购买区 -->
        <div class="mui-card">
			<div class="mui-card-header">
                {{ goodsinfo.title }}
            </div>
			<div class="mui-card-content">
				<div class="mui-card-content-inner">
					<p class="price">
                       市场价：<del>￥{{ goodsinfo.market_price }}</del>&nbsp;&nbsp;销售价<span class="now_price">￥{{ goodsinfo.sell_price }}</span>
                    </p>
                    <p>购买数量：<numbox @getCount="getSelectedCount" :max="goodsinfo.stock_quantity"></numbox></p>
                    <p>
                        <mt-button type="primary" size="small">立即购买</mt-button>
                        <mt-button type="danger" size="small" @click="addToShopCar">加入购物车</mt-button>
                    </p>
				</div>
			</div>
		</div>
			
        <!-- 参数区 -->
        <div class="mui-card">
			<div class="mui-card-header">商品参数</div>
			<div class="mui-card-content">
				<div class="mui-card-content-inner">
					<p>商品货号：{{ goodsinfo.goods_no }}</p>
                    <p>库存情况：{{ goodsinfo.stock_quantity }}件</p>
                    <p>上架时间：{{ goodsinfo.add_time | dateFormat }}</p>
				</div>
			</div>
			<div class="mui-card-footer">
                <mt-button type="primary" size="large" plain @click="goDesc(id)">图文介绍</mt-button>
                <mt-button type="danger" size="large" plain @click="goComment(id)">商品评论</mt-button>
            </div>
		</div>
			
    </div>
</template>
<style scoped>
.goodsinfo-container{
    background-color: #eee;
    overflow: hidden;
}
.now_price{
    color: red;
    font-size: 16px;
    font-weight: bold;
}
.mui-card-footer{
   display: block; 
}
.mui-card-footer button{
    margin: 15px 0;
}
.goodsinfo-container .ball{
    width: 15px;
    height:15px;
    border-radius: 50%;
    background-color: red;
    position:absolute;
    z-index: 99;
    top: 390px;
    left: 146px;
}
</style>
<script>
// 导入轮播图组件
import swiper from "../subcomponents/swiper.vue";
import numbox from "../subcomponents/goodsinfo_numbos.vue";
import goodsinfo_numbosVue from '../subcomponents/goodsinfo_numbos.vue';
    export default{
        data(){
            return{
                id: this.$route.params.id, // 将路由参数对象中的 id 挂载到 data , 方便后期调用
                lunbotu: [], // 轮播图的数据
                goodsinfo: {}, // 获取到的商品的信息
                ballFlag: false, // 控制小球的隐藏和显示的标识符
                selectedCount:1
            }
        },
        created(){
            this.getLunbotu();
            this.getGoodsInfo();
            
        },
        methods:{
            getLunbotu(){
              this.$http.get('api/getthumimages/' + this.id).then(result=>{
                  if (result.body.status === 0) {
                      result.body.message.forEach(item => {
                          item.img = item.src;
                      });
                      this.lunbotu = result.body.message;
                  }
              });
            },
            getGoodsInfo(){
                this.$http.get('api/goods/getinfo/' + this.id).then(result=>{
                    if (result.body.status === 0) {
                        this.goodsinfo = result.body.message[0]
                    }
                })

            },
            goDesc(id){
                this.$router.push({name: "goodsdesc",params:{ id }});
            },
            goComment(id){
                this.$router.push({name: "goodscomment",params:{ id }});
            },
            addToShopCar(){
                this.ballFlag = !this.ballFlag;
                //拼接出一个，要保存到store中的car数组里的商品信息
                var goodsinfo = {
                    id:this.id,
                    count:this.selectedCount,
                    price:this.goodsinfo.sell_price,
                    selected:true
                    }
                    this.$store.commit("addToCar", goodsinfo);
            },
            beforeEnter(el) {
                el.style.transform = "translate(0, 0)";
            },
            enter(el,done){
                el.offsetWidth;
                
                // 获取小球的 在页面中的位置
                const ballPosition = this.$refs.ball.getBoundingClientRect();
                // 获取 徽标 在页面中的位置
                const badgePosition = document
                    .getElementById("badge")
                    .getBoundingClientRect();

                const xDist = badgePosition.left - ballPosition.left;
                const yDist = badgePosition.top - ballPosition.top;
                el.style.transform= `translate(${xDist}px, ${yDist}px)`;
                el.style.transition = " all 1s cubic-bezier(.4,-0.3,1,.68) ";
                done()
            },
            afterEnter(el) {
                this.ballFlag = !this.ballFlag;
            },
            getSelectedCount(count){
                this.selectedCount = count;
                console.log("父组件拿到的数量值为： " + this.selectedCount);
            }

        },
        components:{
            swiper,
            numbox,
        }
    }
</script>